cherry.foundation.render.ObjectRendererImpl.java Source code

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Here is the source code for cherry.foundation.render.ObjectRendererImpl.java

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/*
 * Copyright 2015 agwlvssainokuni
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cherry.foundation.render;

import java.text.NumberFormat;
import java.util.List;
import java.util.Locale;

import org.apache.commons.collections4.CollectionUtils;
import org.joda.time.LocalDate;
import org.joda.time.LocalDateTime;
import org.joda.time.LocalTime;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.core.convert.ConversionService;
import org.springframework.format.number.NumberFormatter;

public class ObjectRendererImpl implements ObjectRenderer {

    private ConversionService conversionService;

    private List<NumberFormatter> numberFormatter;

    public void setConversionService(ConversionService conversionService) {
        this.conversionService = conversionService;
    }

    public void setNumberFormatter(List<NumberFormatter> numberFormatter) {
        this.numberFormatter = numberFormatter;
    }

    @Override
    public String render(Object value, Integer mode) {
        if (value == null) {
            return "";
        } else if (value instanceof Number) {
            Locale locale = LocaleContextHolder.getLocale();
            if (CollectionUtils.isEmpty(numberFormatter)) {
                return NumberFormat.getInstance(locale).format(value);
            } else {
                return getSafe(numberFormatter, mode).getNumberFormat(locale).format(value);
            }
        } else if (value instanceof LocalDate) {
            return conversionService.convert(value, String.class);
        } else if (value instanceof LocalTime) {
            return conversionService.convert(value, String.class);
        } else if (value instanceof LocalDateTime) {
            return conversionService.convert(value, String.class);
        } else if (value instanceof String) {
            return (String) value;
        } else {
            return value.toString();
        }
    }

    private <T> T getSafe(List<T> list, Integer index) {
        if (index == null) {
            return list.get(0);
        } else if (index.intValue() < 0) {
            return list.get(0);
        } else if (index.intValue() >= list.size()) {
            return list.get(list.size() - 1);
        } else {
            return list.get(index.intValue());
        }
    }

}